Secondary or storage battery.



B. FORD.

SECONDARY OR STORAGE BATTERY.

APPLIOATIoN FILED 11111.27, 1914.

1,095,722. Patented May 5, 1914.

2 SHEETS-SHEET 1.

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WIM/6658: #IVE/V703 m1.. Byruce Fbrcl M s WIEN/Mex Blofm SECONDARY QB STORAGE BATTERY. ATPLIGATIOH FILED JAN. 27, 1914.

1,095,722. I Patented May-5,1914,

2 SHEETS-'SHEET 2.

s frucefra? BRUCE FORD, F PHILADELPHIA, PENNSYLVANIA.

SECONDARY 0R STORAGE BATTERY.

Specification of Letters Patent.

Application led January 27, 1914. Serial No. 814,636.

T0 all whom it may concern Be it known that I, BRUCE FORD, a citize'n -of the United States, and aresident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvementsw in Secondary or Storage Batteries, of which the following is a specification. f

The principal object of the present invention is to oppose. prevent or minimize the breaking of .so-called rubber jars.

The invention consists in the combination to be presently described and finally claimed.

In the-accompanying drawings,- Figure 1 is a to'p or plan view of a storage battery embodyingthe combination of the invention. Fig. 2, is a side View of the same partly in section, Fig. 3, is a top .or plan riew, partly in section of a storage battery embodying the combination of the invention but differing somewhat in details. Fig. 4, is a side View, partly in section, of the apparatus shown in Fig. 3, and Fig. 5, is a diagrammatic sectional View illustrative of z the mode of operation and results of the combination.

ln the drawings l is the flexible, plastic jar wall of insulating rubber material which is initially incapable when subjected to the heat incident to the operation of the battery of sustaining the fluid pressure of the electrolyte Q, without undue bulging and which with time may become hard and brittle. By rubber material is meant those well known compoundswhich are usually referred to as hard rubber but which as is well known may contain many ingredients besides rubber and sulfur. The flexible and plastic quality of the wall may be imparted to it-by incom- 'r plete vulcanization or by the proportion of the compounds which enter into the rubber material. After the rubber sets in the processes as indicated, and by reason of those processes the rubber will by age and heat become hard and brittle.

5, are rigid supporting walls and they constitute the Walls of a box or tray. As

` shown in Figs. 1 and Q some of the walls of each jar 6 abut upon each other, but the` wall abuts upon some of the jar walls. As shown in Figs. 3 and 4, there is a wall 5 completely surrounding each ar.l The cover Patented May 5, 1914.

7 yas shown in Fig.v 2 litsy inside o f the jar walls 1 and so opposes any tendency which they might have to collapse inward bVreason of their flexible or plastic quality; This same result is accomplished.' as shown' vin Fig. 4 by having' a part 7a of the cover arranged within the walls 1, while the part 7 b i of the cover is arranged outside ofthe walls 1.

i The operation is that thel rigid'supportmg walls 5 supply the necessary strengthI for preventing the jar walls llfrom unduly bulging under the pressurefof the' electro-- lyte i?. so long as the jar Walls l remain flexible and plastic. Of course the time is not essential but the walls'l may -remain plastic and flexible for from six months to a couple of years or more. Howeyenwhen the jar walls 1 become rigid and perhaps brit-- tle, they are not. subjected to undue strains because while they were plastic and yielding they conformed to the; surface, or perhaps more accurately, to inequality of the surfacel of the walls 5, as' shown in Fig. y5,

so that when the jar Walls do becomek hardv and unyielding theirl entire contacting surface 1s supported by the rigid wall 5. The` result is that the walls 1 being initially soft and yielding, as distinguished from beingy brittle, are'not subject to breakage and since they are supported by the Walls 5y they can resist the fluid pressure 'without' undue bulging Aand in course of time when the walls` 1 become hard and rigid, they are so supported all over their surface lthat they.

are not. subjected., to strain and'flience are not likely to break. IIn these; twoways 'Y l breakage of the jars is opposechminimized or prevented, while at the same time the bat:- tery is satisfactory.

y lVhatI claim is;

l'. In an electric storage batteryfthe'eomf bination of flexible plastic jar- Walls of in-v sulating' hardrubber material which with time become hard and brittle,A and separable rigid supporting walls to 'which the jar walls conform While plastican'd which support the entire contacting surface ofthe jar walls when they become hard and brittle whereby breakage of jars is minimized. Y 2. In an electric storage battery the combination of flexible plastic jar walls kof insulating hard rubber material which with time become hard and brittle, separable rigid supporting walls to which the jar walle conform while plastic and Which suppert the entire contacting surface of the jarr walls when they bei-ome hard and brittle, whereby breakage of jars is minimized, and a cover engaging' the inside of the jar Walls.

f3. ln an electric storage battery the combination ot' flexible plastic jar Walls of insulatiue' rubber materialwhich with time become hard and brittle, rigid supporting walll to which the jar Walls Conform While plaatie and which support the entire contacting' surface. of the jarwvalls when they become hard and brittle, whereby breakage of jar,- is minimized, and a cover engaging the inaide and outside of the 'jar Walls.

Ll. ln an electric storage battery the combination of flexible plastic jar Walls of insulating material which is initially fiexible and plaat-ic and incapable of sustaining the l'luid pressure and which with time become hard and brittle, rigid unyielding plate supporting' ribs termine` part of the bottom jar walls, plates on said ribs, electrolyte confined by the jar walls, and separable rigid supporting' walls which support the jar Walls While flexible and plastic and to which the jar walls conform While flexible and plaetie and which support the entire contactiugr surface of the. jar Walls when they become brittle, whereby breakage of jars is minimized, opposed or prevented;

ln an electric Storage battery the combiuatiou ot flexible plastic jar Walls of insulating' material which is initially flexible and plastic and incapable of sustainingr the liuid pressure and which with time become hard and brittle, rieid unyielding` plate supportingribs forming;l part of the bottom jar walls, plates on said ribs, electrolyte confined by the jar Walls, separable rigid supporting' walls which supportv the jar Walls while flexible and plastic and to which the jar Vwalls `conform while fiexible and plastic and which support the entire contacting surface of the jar walls when they become brittle, whereby breakage ot' jars is mini mized` opposed or prevented, and a cover engaging the inside of the jar Walls.

(i. In an electric storage battery the combination of flexible plastic jar Walls of in sulating' material which is initially flexible and`plastic and incapable of sustaining the liuid pressure and which with time become hard and brittle. rigid unyielding plate supporting ribs i'oriiiinel part of the bottom jar walls, plates on said ribs, electrolyte con t'med by the jar walls, separable rigid supporting walls which support the jar Walls while flexible and plastic and to which the lar walls coliform while flexible and plastic and which support the entire contacting surf'aee ofthe jar Walls when they become brittle, whereby breakage of jars is minimized, opposed and prevented, and a cover engag iu;v the inside and outside of the jar Walls.

BRUCE FORD.

ll'ituesses:

(mriform K. Gassen, FRANK ll. FRENCH.

il. i 

